Global Patent Index - EP 0970179 A1

EP 0970179 A1 2000-01-12 - LAUNDRY ADDITIVE PARTICLE HAVING MULTIPLE SURFACE COATINGS

Title (en)

LAUNDRY ADDITIVE PARTICLE HAVING MULTIPLE SURFACE COATINGS

Title (de)

MEHRFACH BESCHICHTETE WÄSCHEZUSATZTEILCHEN

Title (fr)

PARTICULE ADDITIVE POUR LESSIVE PRESENTANT PLUSIEURS REVETEMENTS DE SURFACE

Publication

EP 0970179 A1 (EN)

Application

EP 98903228 A

Priority

  • IB 9800242 W
  • US 4143397 P

Abstract (en)

[origin: WO9842818A1] A laundry additive particle having multiple coatings and compositions employing the particle are provided. The laundry additive particle comprises a central core particle with the core particle comprising a porous carrier core material and a glassy encapsulating material intermixed with the carrier material. The glassy encapsulating material is derived from one or more at least partially water-soluble hydroxylic compounds having an anhydrous, nonplasticized, glass transition temperature, Tg, of at least about 0 DEG C. An optional intermediate encapsulating material may be coated on the central core particle. The intermediate encapsulating material may comprise a carbohydrate material having an anhydrous, nonplasticized, glass transition temperature, Tg, of at least about 130 DEG C. Lastly, an external coating material is coated on the core particle or the intermediate encapsulating material which provides the laundry additive particle with a substantially non-tacky surface. The external coating material is derived from one or more at least partially wash soluble or dispersible compounds selected from the group consisting of waxes, water-soluble polymers, fatty compounds, carbohydrates, cellulose and cellulose derivatives, natural and synthetic gums, silicates, borates, phosphates, chitin and chitosan, and mixtures thereof. The laundry additive particle has a hygroscopicity value of less than about 80 %. Preferably, a laundry or cleaning agent such as a perfume is supported on or contained in the porous carrier.

IPC 1-7 (main, further and additional classification)

C11D 17/00; C11D 3/12; C11D 3/50

IPC 8 full level (invention and additional information)

C11D 17/06 (2006.01); C11D 3/08 (2006.01); C11D 3/10 (2006.01); C11D 3/12 (2006.01); C11D 3/22 (2006.01); C11D 3/50 (2006.01); C11D 17/00 (2006.01); C11D 3/386 (2006.01); C11D 3/39 (2006.01)

CPC (invention and additional information)

C11D 3/505 (2013.01); C11D 3/08 (2013.01); C11D 3/10 (2013.01); C11D 3/128 (2013.01); C11D 3/222 (2013.01); C11D 17/0039 (2013.01); C11D 3/3905 (2013.01)

Citation (search report)

See references of WO 9842818A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

EPO simple patent family

WO 9842818 A1 19981001; AU 6003598 A 19981020; BR 9808409 A 20000516; CA 2282405 A1 19981001; CA 2282405 C 20030422; CN 1256710 A 20000614; EP 0970179 A1 20000112; JP 2001518135 A 20011009; MA 24501 A1 19981001; US 6221826 B1 20010424; ZA 9802161 B 19980915

INPADOC legal status


2004-03-31 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030916

2002-07-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020605

2000-01-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990927

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE